/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/MoviePipelineSetting.h
This is called once on a setting when the movie pipeline is shut down. If the setting only exists as part of a shot override, it will be called once the shot is finished. see shot-related callbacks so that they work properly with shot-overrides.
void OnMoviePipelineShutdown ( [UMoviePipeline](API\Plugins\MovieRenderPipelineCore\UMoviePipeline) * InPipeline )